-Wreckage of Halo from the first game inside the gas giant Thresholds atmosphere. (Bungie has said that MC might return to it, and the guy talking mentioned something that alluded to being inside the atmosphere of a gas giant. We all know that Halo was orbiting a gas giant, Threshold. ;))

-Perhaps a shot of a war-torn Covenant homeworld. (Bungie has said we will be taking the fight to the Covenant on their home turf, but I somehow suspect that the Covie homeworld will be predominantly purple, if their aesthetics from Halo 1 are any indication. ;))

-Or maybe it's the Covenant glassing Earth. (Those bastards.)

At any rate I'm really, really excited about this game now. And it seems that Bungie is putting a lot of effort into telling a cool story, which is just fantastic. Aagghh! It's still so far away...can'twait can'twait can'twait...